Computer icon for a display screen



FIG. 1 is a front view of a computer icon for a screen;

FIG. 2 is a front view of a second embodiment thereof;

FIG. 3 is a front view of a third embodiment thereof;

FIG. 4 is a front view of a fourth embodiment thereof; and,

FIG. 5 is a front view of a fifth embodiment thereof.

The broken line in FIGS. 1 through 5 are for illustrative purposes only, for the purpose of showing a screen environment and form no part of the claimed design. 

The ornamental design for a computer icon for a display screen, as shown and described. 